This mixed-method study explored the effect of the flipped classroom model (FCM) on vocabulary learning of young English language learners and their perceptions and experiences about FCM practices. Two intact groups of 4th-grade students in a state primary school in Turkiye were randomly assigned as experimental (N = 32) and control (N = 33) groups. The quantitative data related to vocabulary learning were collected through three measurement tests. The qualitative data were obtained via semi-structured face-to-face interviews with 19 volunteer students from the experimental group. The results revealed that the levels of vocabulary learning and retention for the experimental group students were statistically significantly higher than those of the control group students (p< 0.05). The qualitative data analysis also confirmed the effectiveness of the model for vocabulary learning and revealed its efficiency for language classes of young English language learners. Accordingly, suggestions were made for the FCM implementation.